修改首页的背景图

public/static/css/switch_login_1.css

@@ -18,7 +18,7 @@ body {
     height: 100%; 
 }
 body {
-    background:url(../img/switch_login_bg.png) repeat-x;
+    background:url(../img/switch_login_bg.png) no-repeat;
     font-size: 80%;
     height: 1080px;
     width: 1920px;